What kind of amp is it?
It's an old EARTH B-1000 Bass amp. Basically the same design as the 100w fender bassman with an extra 12AX7 in the preamp stage. Built in 1972. I initially looked for a 240v tap on the transformer but didn't find one.
Thanks for the reply!
Being an old rock and roller form the 70's I actually remember seeing those. Earth was a small manufacturer - there were lots of them in garages and mini-warehouses back then. I don't think they thought much beyond the US market though, so I'm not surprised to hear that it doesn't have 220 voltage taps. They probably used an off the shelf transformer from Stancore, Triad or one of the other transformer suppliers.
If you've been using it this long on 50 Hz with no problem, I wouldn't worry about it a lot. As long as it doesn't get really hot and doesn’t emit very nasty odors, it is probably OK.
Boogie on....
